Infrastructure at your Service

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Operation systems

Jérôme Dubar

Oracle Database Appliance vs Oracle Cloud Infrastructure

By | Cloud, Database Administration & Monitoring, Database management, Development & Performance, Hardware & Storage, Operation systems, Oracle | No Comments

Introduction Oracle Database Appliances are very popular these days. And not only among new customers for this kind of engineered systems. Almost all customers already using old generation ODAs are renewing their infrastructure by choosing again ODAs, meaning that the solution is good enough and probably better than anything else. But now, public clouds are a real alternative to on-premise servers, and Oracle Cloud Infrastructure is a solid competitor vs Amazon and Azure public clouds….

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Mouhamadou Diaw

Duplicate Database on ODA X4

By | Database Administration & Monitoring, Database management, Operation systems, Oracle | No Comments

The ODA X4 is still in use for some customers. The last time I was asked to validate the backups . Let me explain the context. Actually the backups are done via RMAN on local in a NFS share. After these backups are backep up by Netback on tape. The goal was just to validate that the backups done by Netback can be used to restore if needed. So the backup teams restored the backups…

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Furkan Suv

SELinux for beginners

By | Operation systems, Security | No Comments

Do you know the following situation: You are following a step by step tutorial on the web and on your environment does not work as expected because of SELinux. Your looking on search engines command how you can disable the SELinux… Does that sound familiar? On this Blog I will explain what SELinux are, where and how to use is. Let’s start! What is SELinux and why should I not disable it? SE stands for…

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Mouhamadou Diaw

Reimaging an ODA to 19.8 Part II

By | Database Administration & Monitoring, Database management, Operation systems, Oracle | No Comments

In my previous blog, I described the steps to deploy an ODA 19.8 by reimaging. The ODA was reimaged with the latest available version 19.8 but some components were not up-to-dated. [[email protected] ~]# odacli describe-component System Version ————— 19.8.0.0.0 Component Installed Version Available Version —————————————- ——————– ——————– OAK 19.8.0.0.0 up-to-date GI 19.8.0.0.200714 up-to-date DCSAGENT 19.8.0.0.0 up-to-date ILOM 4.0.4.38.a.r132148 4.0.4.51.r134837 BIOS 52020500 52021300 OS 7.8 up-to-date FIRMWARECONTROLLER VDV1RL02 VDV1RL04 FIRMWAREDISK 1120 1102 HMP The patch was…

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Mouhamadou Diaw

Reimaging an ODA to 19.8 Part I

By | Database Administration & Monitoring, Operation systems, Oracle | No Comments

Recently I was deploying some ODA X8-2M. To install the 19.8 software, I decide to reimage the server with the 19.8 image. In this blog I describe the main steps I did. First, we will need to download following patches from Oracle support website -Patch 30403643: Oracle Database Appliance 19.8.0.0.0 OS ISO IMAGE for all platforms -Patch 30403673: Oracle Database Appliance GI Clone for ODACLI/DCS stack (and -Patch 30403662: Oracle Database Appliance RDBMS Clone for…

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Jérôme Dubar

Boost your CPU speed with Standard Edition 2 on ODA

By | Database Administration & Monitoring, Database management, Development & Performance, Hardware & Storage, Operation systems, Oracle | No Comments

Introduction There is no need to decrease the number of cores on your ODA when using Standard Edition 2, because your license is based on the number of physical CPU. So why would you do that? Obviously, the more cores you have, the more performance you should get. But that simply isn’t always true. Base CPU speed and Turbo Boost If you didn’t read my previous blog, please do so to understand how Xeon processors…

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Jérôme Dubar

Oracle Database Appliance and CPU speed

By | Database Administration & Monitoring, Development & Performance, Hardware & Storage, Operation systems, Oracle | No Comments

Introduction A complaint I heard from customers about ODA is the low core speed of the Intel Xeon processor embedded in the X8-2 servers: Intel(R) Xeon(R) Gold 5218 CPU @ 2.30GHz. 2.30GHz only? Because of its comfortable number of cores (16 per processor), the cruise speed of each core is limited. Is it a problem compared to a home made server with less cores? Why clock speed is important? As you may now, the faster…

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Jérôme Dubar

ODA: odacli now supports Data Guard in 19.8

By | Database Administration & Monitoring, Database management, Hardware & Storage, Operation systems, Oracle | 2 Comments

Introduction I’ve been dreaming of this kind of feature: just because most of the ODA configurations now include Disaster Recovery capabilities, through Data Guard or Dbvisit standy. If Dbvisit will obviously never be integrated to odacli, the lack of Data Guard features is now solved by the very latest 19.8 ODA software appliance kit. How Data Guard was implemented before 19.8? Those who have been using ODA and Data Guard for a while know that…

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Furkan Suv

How to prepare for the SLES 15 Admin certification.

By | Operation systems | No Comments

My Background Since I started at dbi services sa (before 3 Weeks), I was working and preparing for the SUSE Linux Enterprise 15 certification. I had worked with other Linux distributions like CentOS, Ubuntu and Debian on my old employer. With my basic Linux knowledge I was able to administrate Apache and nginx with virtual hosts, SSL Encryption with Let’s Encrypt, installing and configuring MySQL Database, opening/closing ports for services with firewall-cmd, network configuration and…

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Jérôme Dubar

Oracle Cloud basics for beginners

By | Cloud, Database Administration & Monitoring, Database management, Hardware & Storage, Operation systems, Oracle | 2 Comments

Introduction Cloud, Cloud, Cloud. Everyone is talking about the Cloud but a lot of people are still in the fog with Cloud technologies. Let’s talk about basic features of the Oracle Cloud, called OCI for Oracle Cloud Infrastructure. What is really OCI? OCI is physically a lot of servers in datacenters all around the world. These servers are not very different from the servers you probably have in your own datacenter. Some of these servers…

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